As a result of the redistricting process, in December of 2021 the Board of Supervisors approved Map ID No. 74786 (a.k.a. the “Patten Map”) as the new supervisorial district boundaries. In the 2022 election cycle, San Luis Obispo County residents voted for supervisors in Districts 2 and 4 using the 2021 adopted boundaries. In April 2023, due to litigation, the Board of Supervisors set aside Map ID 74786 and approved Map A which established different supervisorial district boundaries.

These boundaries are in effect as of their adoption, however, per the Elections Code, they are phased in over the course of several years as terms of office expire and as elections occur in each of the new districts. In 2024, Districts 1, 3, and 5 will vote for their supervisor using the 2023 district boundaries. In 2026, Districts 2 and 4 will vote for their supervisor using the 2023 district boundaries. Once the new Board takes office in January 2027, all supervisors will then be re-elected under the 2023 district boundaries.